idct: cosmetics: Drop one unnecessary if-block level

libavcodec/idctdsp.c

@@ -162,8 +162,7 @@ av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
         c->idct_add  = ff_simple_idct_add_10;
         c->idct      = ff_simple_idct_10;
         c->perm_type = FF_IDCT_PERM_NONE;
-    } else {
-        if (avctx->idct_algo == FF_IDCT_INT) {
+    } else if (avctx->idct_algo == FF_IDCT_INT) {
         c->idct_put  = jref_idct_put;
         c->idct_add  = jref_idct_add;
         c->idct      = ff_j_rev_dct;
@@ -179,7 +178,6 @@ av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
         c->idct      = ff_simple_idct_8;
         c->perm_type = FF_IDCT_PERM_NONE;
     }
-    }
 
     c->put_pixels_clamped        = put_pixels_clamped_c;
     c->put_signed_pixels_clamped = put_signed_pixels_clamped_c;